上面提到的四种题型无论从题目的结构上还是出题方式上都如出一辙，我们如果对其中一种了如指掌，其它三种自会融会贯通。下面就让我们学习一下假设题的内容吧。
一、GMAT逻辑假设题的理解
1、假设题的定义。
对于逻辑中的假设题我们通常将其定义为文章成立的必要条件。官方判定假设题的方法是：如果这个必要条件(正确答案)不成立，那么文章也一定不成立。
2、假设题的判定方法。
问题中出现如下标志词：assume, presuppose, additional premise, not true unless, depend on…
(详情请看 GMAT逻辑假设题详解 )
二、假设题的解法
1、假设题的官方解法。
如果能够将题目的五个选项全部都取反，把它当作削弱题做就可以了。把所有的假设题目都拿到一起，都观察了一下正确答案的模式。发现将近90%目前还在考察的假设题，正确答案都是一种否定句的模式出现的。
2、做题步骤：
1)读问题，读文章，尽量判断文章结构。
2)看选项【找出选项当中所有的否定句(一句话的主句当中的谓语动词和系动词后面有否定词或否定副词-否定句)，捂住否定词，当肯定句理解，如果削弱文章，就是答案】。
3)若选项中没有否定句，通常情况下，文章一定是前提决断结构，此时要找前后桥梁为答案。
(详情请看 GMAT逻辑演绎题解法 )
三、假设题的两种结构例题解析
1、第一种结构——果因结构的假设题。
果因结构的假设题目难，选项特点： not+他因weaken，取非之后削弱文章的表现。
果因结构的假设题的正确答案的模式：没有别的原因导致相同的结果。
例一. 染上t这种病的人一次又一次重复发作。这就证明了t这种病从未被根治过。求假设?(关于这种人)
(A) 不可能完全根治t。
(B) 并不理解什么导致t。
(C) 未获得t的药物治疗。
(D) 不采取步骤避免得t。
(E) 并未重复感染上t。
例二. Statistics over four consecutive years showed that four percent more automobile accidents happened in California during the week following the switch to daylight saving time and during the week following the switch back to standard time than occurred the week before each event. These statistics show that these time changes adversely affect the alertness of California drivers.
The conclusion in the argument above is based on which of the following assumptions?
(A) Drivers in California as well as those in the rest of the United States have similar driving patterns.
(B) The observed increases in accident rates are due almost entirely to an increase in the number of minor accidents.
(C) Four years is not a sufficiently long period of time over which to judge the phenomenon described.
(D) There are no other factors such as school vacations or holiday celebrations that cause accident rates to rise during these weeks.
(E) A time change at any other time of year would not produce a similar increase in accident.
2、第一种结构——前提结论结构的假设题。
前提结论的假设题又目简单，选项特点：
1)not + weaken;
2)前后桥梁型 。
例一.因为别人的老婆都有别墅， 所以我也应该有别墅。求假设?
A. 我的老公应该更努力赚钱
B. 我应该努力奋斗
C. 别墅应该降价
D. 婚姻是否幸福与是否有别墅无关
E. 我应该是别人的老婆
分析：正确答案的模式就是前后桥梁型。
例二.Even though most universities retain the royalties from faculty members’ inventions, the faculty members retain the royalties from books and articles they write. Therefore, faculty members should retain the royalties from the educational computer software they develop.
The conclusion above would be more reasonably drawn if which of the following were inserted into the argument as an additional premise?
(A) Royalties from inventions are higher than royalties from educational software programs.
(B) Faculty members are more likely to produce educational software programs than inventions.
(C) Inventions bring more prestige to universities than do books and articles.
(D) In the experience of most universities, educational software programs are more marketable than are books and articles.
(E) In terms of the criteria used to award royalties, educational software programs are more nearly comparable to books and articles than to inventions.
(详情请看 GMAT逻辑假设题解法 )
GMAT逻辑假设题的基础解释、解法、题目结构以及出题方式百利天下小编就为大家分享这些。以上内容融合了小编的个人理解和权威讲师的授课内容，希望大家能够好好吸收。
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